hello there, a few weeks ago i noticed a white mark on the top of my shaft , looking at it , it looks like when you have sunburn and peels off whiter than the surroundfing area.. a white blemish on my tanned body.... it will randomly get itchy, then when i scratch it flares up almost like a insect bite....?? its roughly the size of a ten pence piece, when i stretch my skin it appears shinier than the surrounding area